Thought I'd jump in here for a moment. The iFly uses an industrial "Resistive" touch screen, this is the preferred technoloy by the Military and Industrial device in more harsh environments. The iPad's "Capacitive" screen is hyper-sensitive and can present many problems in air with altitude, humidity and turbulence. It was design for the couch or light multi-media operations, not the demands of the cockpit. iPad screens also have a ceiling limit of 10k, or it voids the warranty and could cause screen damage. They are great for what they are designed for, but Apple has not once advertized the iPad for pilot navigation.
We code alot of error correction into the iFly 720 since we control the software and the device, and as such you should use a firm touch on the screen. Think "Confident and Committed" in your touches, like how we should fly. Also, think about flying and bouncing around in turbulence and trying to lightly touch the screen or pich zooming. It is very frustrating. The "Resistive" screen also allows pilots to use regular gloves and non-Touch technology stylus or even a finger nail.
As for rubber-banding. Think about a rubber-band on a glass table and trying to touch it with your "fleshy" part of your finger tip, it's not consistent. Now try this. Rotate your finger so the you can put the back edge of your fingernail on the "magenta line". In one motion, touch the "magenta line" and try pushing it left or pulling it right. You really don' t have to pause after you touch the Magenta line, we know you touched it or near it. When you get it to the point you want, just release it. Your finger nail, or callased corner of your finger makes it just a bit easier.
I hope this helps.